a)x(b + c) + 5b + 5c = xb + xc + 5b + 5c = b(x + 5) + c(x + 5) = (b + c)(x + 5)
б)4x - 4y + ax - ay = 4(x - y) + a(x - y) = (4 + a)(x - y)
a)
x(b + c) + 5b + 5c = xb + xc + 5b + 5c = b(x + 5) + c(x + 5) = (b + c)(x + 5)
б)
4x - 4y + ax - ay = 4(x - y) + a(x - y) = (4 + a)(x - y)